how to make a check all checkbox using jquery?

Question

What I'm looking for is when I check "all" all other elements are checked and when I uncheck it all others are unchecked.

$(".dropdown dt a").on('click', function() {
  $(".dropdown dd ul").slideToggle('fast');
});

$(".dropdown dd ul li a").on('click', function() {
  $(".dropdown dd ul").hide();
});

function getSelectedValue(id) {
  return $("#" + id).find("dt a span.value").html();
}

$(document).bind('click', function(e) {
  var $clicked = $(e.target);
  if (!$clicked.parents().hasClass("dropdown")) $(".dropdown dd ul").hide();
});

$('.mutliSelect input[type="checkbox"]').on('click', function() {

  var title = $(this).closest('.mutliSelect').find('input[type="checkbox"]').val(),
    title = $(this).val() + " ";

  if ($(this).is(':checked')) {
    var html = '<span title="' + title + '">' + title + '</span>';
    $('.multiSel').append(html);
    $(".hida").hide();
  } else {
    $('span[title="' + title + '"]').remove();
    var ret = $(".hida");
    $('.dropdown dt a').append(ret);
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<dl class="dropdown">
  <dt>
    <a>
      <span class="hida">Choisir :</span>
      <p class="multiSel"></p>
    </a>
    </dt>
  <dd>
    <div class="mutliSelect">
      <ul>
        <li> <input type="checkbox" name="ALL" value="All"> All</li>
        <li> <input type="checkbox" name="check_list[]" value="val1">val1</li>
        <li> <input type="checkbox" name="check_list[]" value="val2">val2</li>
        <li> <input type="checkbox" name="check_list[]" value="val3">val3</li>
      </ul>
    </div>
  </dd>
</dl>

https://jsfiddle.net/8kwb54md/1/

"Why doesn't my code work?" requires a minimal reproducible example which shows the actual problem in the question itself and not only a link to an external resource. — Andreas
– Andreas, Commented Sep 30, 2018 at 17:29
That's why we require a minimal example. Strip anything that isn't related to the problem. And as you can see on my edit it is absolutely possible to supply such a minimal example... — Andreas
– Andreas, Commented Sep 30, 2018 at 17:33

connexo · Accepted Answer · 2018-09-30 17:41:28Z

2

I reduced your HTML to the list with the checkboxes:

document.querySelector('[name=ALL]').addEventListener('change', (e) => {
  let checkboxes = e.target.closest('ul').querySelectorAll('input[type=checkbox]');
  Array.from(checkboxes).forEach((cb) => {
    cb.checked = e.target.checked;
  });
})

<ul>
  <li> <input type="checkbox" name="ALL" value="All">All</li>
  <li> <input type="checkbox" name="check_list[]" value="val1">val1</li>
  <li> <input type="checkbox" name="check_list[]" value="val2">val2</li>
  <li> <input type="checkbox" name="check_list[]" value="val3">val3</li>
</ul>

If you insist on using jQuery, here you go:

$('[name="ALL"]').on('change', function() {
  var self = this;
  $(this).closest('ul').find('input[type="checkbox"]').each(function() {
    this.checked = self.checked;
  })
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
  <li> <input type="checkbox" name="ALL" value="All">All</li>
  <li> <input type="checkbox" name="check_list[]" value="val1">val1</li>
  <li> <input type="checkbox" name="check_list[]" value="val2">val2</li>
  <li> <input type="checkbox" name="check_list[]" value="val3">val3</li>
</ul>

edited Sep 30, 2018 at 17:41

answered Sep 30, 2018 at 17:31

connexo

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4 Comments

connexo Over a year ago

@issam The StackOverflow way of saying "thanks" is upvoting.

issam Over a year ago

oh ok but i can't cuz i'm below 15 lvl :)

Heretic Monkey Over a year ago

@connexo The Stack Overflow way is to mark questions as duplicates, not answer them... :P

connexo Over a year ago

@HereticMonkey I like to add non-jquery answers to jquery questions, though :)

Baldráni · Accepted Answer · 2018-09-30 17:37:02Z

1

You should look at each()

Here is a bit of help :

$('[name="ALL"]').on('click', function(){
    $('.mutliSelect input[type="checkbox"]').each(function(){
        $(this).prop('checked') ?  $(this).prop('checked','') : $(this).prop('checked','checked')
    })
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<ul class="mutliSelect">
  <li> <input type="checkbox" name="ALL" value="All">All</li>
  <li> <input type="checkbox" name="check_list[]" value="val1">val1</li>
  <li> <input type="checkbox" name="check_list[]" value="val2">val2</li>
  <li> <input type="checkbox" name="check_list[]" value="val3">val3</li>
</ul>

edited Sep 30, 2018 at 17:37

answered Sep 30, 2018 at 17:31

Baldráni

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6 Comments

connexo Over a year ago

And if he unchecks ALL?

connexo Over a year ago

The property checked is either true or false.

issam Over a year ago

@Baldráni thanks dude it works perfectly but how about whene i uncheck "all" the rest are unchecked too

Baldráni Over a year ago

@connexo I'm sorry but I don't get your point with your remark

connexo Over a year ago

$(this).prop('checked','') is setting HTMLInputElement.prototype.checked which is a boolean property on the element to an empty string.

|

score 0 · Accepted Answer · 2018-09-30 17:40:47Z

0

$(".mutliSelect input:checkbox").first().click(function(){
    $('.mutliSelect input:checkbox').not(this).prop('checked', this.checked);
});

This code will select the first input checkbox, hook it to the click event, then it will check all the remaining checkboxs but not the first one, if the first checkbox is checked it will check them all otherwise uncheck them all.

Bon courage.

edited Sep 30, 2018 at 17:40

answered Sep 30, 2018 at 17:36

user443917

1 Comment

issam Over a year ago

mrc c tres gentil ;)

Punith Mithra · Accepted Answer · 2018-09-30 18:28:30Z

We need to uncheck all checkbox if any of the options are unchecked.

var checkBoxAll = $('ul li> input[name="ALL"]');
var checkBoxOptions = $('ul li> input:not([name="ALL"])');
checkBoxAll.on('change', function() {
  var self = this;
  $(this).closest('ul').find('input[type="checkbox"]').each(function() {
    this.checked = self.checked;
  })
})

// to check or uncheck All checkbox, if all the options are checked.
checkBoxOptions.on('change', function() {
    var isAllChecked = true;
  
  // to find if any of the options is false.
  $(this).closest('ul').find('li> input:not([name="ALL"])').each(function() {
    if (!this.checked) return isAllChecked = false;
  })
  
  checkBoxAll.get(0).checked = isAllChecked;
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
  <li> <input type="checkbox" name="ALL" value="All">All</li>
  <li> <input type="checkbox" name="check_list[]" value="val1">val1</li>
  <li> <input type="checkbox" name="check_list[]" value="val2">val2</li>
  <li> <input type="checkbox" name="check_list[]" value="val3">val3</li>
</ul>

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